Process for producing sulfonylureas having a herbicidal...

Details Process for producing sulfonylureas having a herbicidal... Process for producing sulfonylureas having a herbicidal...

C - Chemistry, Metallurgy

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D

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C07D 239/28 (2006.01) C07D 251/12 (2006.01) C07D 251/16 (2006.01) C07D 403/12 (2006.01) C07D 521/00 (2006.01) C07F 7/10 (2006.01)

Patent

CA 1243674

- 1 - Case 5-14064/= A process for producing sulfonylureas having a herbicidal action and an action regulating Plant growth Abstract Process for producing hervicidal and plant-growth- regulating sulfonylureas of the general formula I Image (I) wherein G is a radical of the formula Image or Image X is C1-C4-alkyl, C1-C4-haloalkyl, C1-C4-alkoxy, C1-C4-alkylthio, C1-C4-haloalkoxy, C1-C4-alkylamino or di-C1-C4-alkylamino, Y is C1-C4-alkyl, C1-C4-haloalkyl, C1-C4-alkoxy or C1-C4-haloalkoxy, and Z is nitrogen or the methine bridge, A is oxygen, sulfùr, -NR5- or -C=N-, R5 being hydrogen, C1-C4-alkyl or -CO-C1-C4-alkyl, R1 is hydrogen, halogen, nitro, -Q-Cl-C4-alkyl, C1-C4-alkyl, CF3, -SO2-di-C1-C4 alkylamino, -CO-Q-C3-C5-alkynyl, or -CO-Q-C1-c4-alkyl or -CO-Q-C3-C5-alkenyl each unsubstituted or substituted by halogen, cyano, C1-C4alkoxy or C1-C4-alkylthio, R2 is hydrogen, halogen, CF3, NO2, C1-C4-alkyl or C1-C4-alkoxy, - 2 - R3 is hydrogen, fluorine or chlorine, R4 is hydrogen, halogen, nitro, CF3, C1-C4-alkyl, -CHR6R7, -SO2-di-C1-C4-alkylamino, -Q-C3-C5-alkynyl, -CO-T-C3-C5-alkynyl, or -Q-C1-C4-alkyl, -Q-C2-C5 alkenyl, -CO-T-C1-C4-alkyl or -CO-T-C3-C5-alkenyl each of which is unsubstituted or substituted by halogen, cyano, C1-C4-alkoxy or C1-C4-alkylthio, Q being an oxygen, sulfur, -SOn-, -NH- or N(C1-C4- alkyl)- bridge, n being zero, one or two, and T being an oxygen, sulfur, -NH- or -N(C1-C4-alkyl)- bridge, R6 is hydrogen, chlorine or methyl, and R7 is chlorine, cyano, methoxy, ethoxy or -SOn-C1-C4- alkyl, which process comprises reacting a sulfonamide of the formula II G-SO2-NH2 (II), wherein G has the meaning defined above, with an N-pyrimidinylcarbamate or N-triazinylcarbamate of the formula III Image (III) wherein X, Y and Z have the meanings defined above, and R is methyl or ethyl.

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